USB hard drive write speeds

[ochadd]

I'm considering a new backup drive for home. Use 4 TB 2.5" drives that get about 100 MBps. A bigger and faster unit would be nice. Anyone have a WD or Seagate prebuilt 16-20 TB drive they use and if so what kind of write speeds do they get?
They spend 99% of their life unplugged. Only online while I copy backups to it.
I have USB to SATA adapters but bare drives are about the same price. Might as well get a free enclosure all else being equal.

 

[applegrcoug]

I'm considering a new backup drive for home. Use 4 TB 2.5" drives that get about 100 MBps. A bigger and faster unit would be nice. Anyone have a WD or Seagate prebuilt 16-20 TB drive they use and if so what kind of write speeds do they get?
They spend 99% of their life unplugged. Only online while I copy backups to it.
I have USB to SATA adapters but bare drives are about the same price. Might as well get a free enclosure all else being equal.

Depends on the file sizes...

Small files are going to be painful.

 

[ochadd]

It will be straight sequential writes of a few files 30GB to 550GB in size each. Each time make a copy of my backups it's 2-3 TB of data that gets written.

 

[Zepher]

My 18TB WD Red Pro does 240 MB/s, it's an internal drive

My 14TB WD Elements via USB do 220 MB/s sequential writes.